
class Mac :
    product_id = "11111"
    product_mac1 = ""
    product_mac2 = ""
    product_sn = ""
    product_hard_version = "1"
    product_name = "dtu"

    def getString(self):
        return self.product_id+" "+self.product_mac1+" "+self.product_mac2+" "+self.product_sn+" "+self.product_hard_version+" "+self.product_name